Game Crashes/Black Screen when exiting world/map editor

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As the title of this thread indicates, when I exit the world editor, more often than not, the game either crashes or it goes into a black screen. This is extremely irritating especially when I'm in the middle of putting a video together.

When the game crashes, it goes back to my desktop, however when the screen goes black as I exit the world editor, the computer has to be restarted which closes all of my open tabs and potential other applications running on the background.

If anyone is able to help me out with this issue, it would be greatly appreciated.